34 results about "Expansive clay" patented technology

The invention belongs to the technical field of foaming agents and provides a foaming agent for a soil pressure balance shield machine. The foaming agent solves the problem that the existing domestic foaming agent produces foam having performances such as uniformity, stability, lubricity and permeability which cannot completely satisfy foam requirements in shield construction and has limited adaptability. The foaming agent is prepared from sodium dodecyl sulfate, sodium alcohol ether sulphate, sodium alpha-olefin sulfonate, a modified silicone resin polyether emulsion and water according to a certain ratio. The foaming agent has stable foaming performances, good foaming effects and long foam stabilization time, realizes good improvement on muck in hard plastic and soft plastic expansive clay, improves plastic flowing and water sealing of excavated soil, prevents soil densification adhesion, prevents caking of a cutterhead and keeps soil warehouses pressure by bubble support. The foaming agent utilizes easily available raw materials having low prices so that a construction cost is reduced effectively. The foaming agent utilizes bulk chemical products and has no pollution and no toxic or side effect on muck and the surrounding environment.

The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.

The invention discloses an anti-seepage composite barrier, which comprises an anti-bypass seepage part and an anti-seepage layer, wherein the anti-bypass seepage part comprises a water soluble polymer membrane and expansive clay, the expansive clay is packaged in the water soluble polymer membrane, a groove is formed in the surface of the anti-bypass seepage part, and the bottom part of the anti-seepage layer is embedded in the groove of the anti-bypass seepage part. The anti-seepage composite barrier has the advantages that the construction is simple, the anti-seepage effect is good, and the problem of bypass seepage at the connecting part of a HDPE (high-density polyethylene) geomembrane and an underground impervious layer is solved.

A regenerable sorbent for the removal of acid gas from a fluid stream. The regenerable sorbent is made from raw materials such as iron mineral, expansive clay and starch. Acid gas is removed from the fluid stream by a process where the raw materials are obtained, crushed, sifted, possibly pelletized, calcined and contacted with the fluid stream containing the acid gas.

A method of producing a cationic asphalt slurry composition which can be used as an asphalt paving sealer or as a paving or repair composition. In the method and composition, latex and other polymers are used to build viscosity and a pH buffering filler is added to prevent flocculation. Consequently, the cationic composition can be stored without irreversibly settling or separating, and without breaking for several days prior to use. In addition, non-expansive clay and a polar polymer hardening agent are used so that, when applied, the composition will set and develop strength very quickly.

The presnt invention relates to a phase-changed energy storage composite material for building. Said invention uses the air-setting or hydraulic binding materials of gypsum and cement, etc. as base body, in which the porous material aggregates of expansive clay, etc. are dispersed, and in the porous material aggregates the organic phase-change materials of paraffin wax or butyl stearate, etc. are stored. Said invention adopts the vacuum impregnation method to prepare phase-change energy-storing aggregate firstly, then utilizes the conventional method for making building material to prepare the invented phase-change energy-storing composite material.

The invention discloses a high strength external wall heat insulation board and a preparation technology thereof. The high strength external wall heat insulation board is characterized by comprising the following raw materials by weight: 22-32 parts of portland slag cement, 16-26 parts of quicklime, 14-20 parts of quartz sand, 22-28 parts of hydrogen peroxide, 10-20 parts of steel slag, 14-20 parts of sawdust, 22-28 parts of expansive clay, 10-20 parts of fly ash, 12-20 parts of dolomite powder, 12-20 parts of paraffin powder, 12-22 parts of dihydrogen phosphate, 12-18 parts of cement powder,12-18 parts of water glass, 10-16 parts of calcium oxide, 9-16 parts of foam polyurethane, 6-12 parts of aerogel, 6-12 parts of phenol formaldehyde resin, and 15-25 parts of foam concrete. According to the high strength external wall heat insulation board and the preparation technology thereof, steel slag, sawdust, dolomite powder and other assistants are added on the basis of portland slag cement, expansive clay, foam concrete and the like, the high strength external wall heat insulation board has the characteristics of high strength, good heat insulation effect and light weight, can bear high pressure, also has simple preparation process, is low in product cost, and can be applied and promoted on a large scale.

The invention provides an environment-friendly pressure-reducing injection-increasing multi-twin active agent and a preparation method thereof, wherein the environment-friendly pressure-reducing injection-increasing multi-twin active agent comprises, by mass, 0.01-0.5% of a polyoxyethylene copolymer resin, 2-45% of dimethyl diallyl ammonium chloride, 5-20% of an organic guanidine compound, 4-16% of a quaternary ammonium salt, 0.1-0.6% of a pH regulator, 0.1-0.6% of a cloud point regulator, and the balance of water. According to the invention, with the environment-friendly pressure-reducing injection-increasing multi-twin active agent, the hydrated expansive clay in stratum becomes insensitive when contacting the injected water, or the reservoir with low permeability expands reversely whilethe resistance of the injected water is substantially reduced, so that the pressure-reducing injection-increasing and plugging release of oil and gas field water injection wells is achieved.

The invention discloses a water stopping material for a steel pipe pile cofferdam buckle. The water stopping material comprises the following raw materials of, by weight, 90-110 parts of aggregate, 9-11 parts of expanded clay and 3-4 parts of a reinforcing material. The water stopping material is formed by mixing the aggregate, the expanded clay and the reinforcing material at a specific ratio, isused for the steel sheet pile cofferdam buckle, and has excellent water stopping effect, water seepage is not prone to occurring, application is convenient, the adhesiveness with the buckle is weak,the strength is low, and the water stopping material is easy and quick to remove in the later stage; and meanwhile, the raw materials are wide in source and low in cost is low, and the suitable waterstopping material is suitable for wide application in the construction industry.

There is provided a cosmetic material removing agent including an expansive clay mineral and a dextrin fatty acid ester. There is provided a cosmetic material removing device including the cosmetic material removing agent as described above and a container for containing and feeding the cosmetic material removing agent.

A method and composition for reducing the swelling capacity of clay-containing soil, thus lowering volume change in soil, and thus enhancing the stability of soil, particularly expansive clay soil, in order that it is sufficiently stable, such that roads, pavements and some types of buildings and other structures can be securely constructed thereon. The method also minimizes any swelling and/or shrinkage in the soil under any such structures due to the movement of moisture in the soil, and thus minimizes damage and deterioration caused to such structures due to the presence of too much, or too little, water in the soil thereunder.

The purpose of the present invention is to provide a coating agent and a film that is formed from the coating agent that impart gas barrier properties to a solid preparation while still ensuring fast disintegrability. The purpose of the present invention is also to provide a coated solid preparation wherein gas barrier properties and fast disintegrability are maintained and wherein cracks do not occur in a film under humidified conditions. The present invention provides a coating agent for a solid preparation, the coating agent including lactose and an expansive clay and not including a water-soluble polymer, the weight of the expansive clay being 20%-50% of the solid component weight.

The invention belongs to the technical field of tunnel engineering, and particularly relates to a weak expansive clay stratum subway station tunneling construction method. The method includes the steps of pilot tunnel construction, integral station supporting system construction, station body earth excavation and second lining structure construction. By adoption of the weak expansive clay stratumsubway station tunneling construction method, the condition of uplift deformation of the excavation face in the excavation process can be effectively restrained while the safe and smooth operation ofweak expansive clay stratum subway station tunneling construction is effectively guaranteed.